package com.example.lotterysystem.common.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Collection;
import java.util.concurrent.TimeUnit;
@Configuration
public class RedisUtil {
    /**
     * RedisTemplate : 先将被存储的数据转换成字节数组 字节数据（不可读），再存储到redis中，读取的时候按照字节数组读取
     * StringRedisTemplate : 直接存放的就是string （可读）
     * 项目背景：String，String （redis的key和value都是string）
     */

    private static final Logger logger = LoggerFactory.getLogger(RedisUtil.class);
    @Autowired
    private StringRedisTemplate stringRedisTemplate;


    public boolean set(String key, String value) {
        try {
            stringRedisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            logger.error("redisutil error,set({},{})", key, value, e);
            return false;
        }
    }

    /**
     * 设置过期时间
     * @param key
     * @param time
     * @param
     * */
    public boolean set(String key,String value,Long time)
    {
        try {
            stringRedisTemplate.opsForValue().set(key, value,time,TimeUnit.SECONDS);
            return true;
        } catch (Exception e) {
            logger.error("RedisUtil error,set({}{}{})",key,value,time,e);
            return false;
        }
    }
    /**
     * 获取值
     *
     * */
    public String get(String key)
    {
        try {
            return StringUtils.hasText(key)?
                    stringRedisTemplate.opsForValue().get(key)
                    :null;
        }catch (Exception e)
        {
            logger.error("redisutil error,get({})",key,e);
            return null;
        }
    }

    /**
     * 删除对应的键
     * */
    public boolean del(String... key){

        try {
            if(null != key && key.length>0) {
                if(key.length == 1){
                    stringRedisTemplate.delete(key[0]);
                }
                else{
                    stringRedisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));
                }
            }
            return true;
        } catch (Exception e) {
            logger.error("redisutil error,del({})",key,e);
            return false;
        }
    }

    public boolean hasKey(String key)
    {
        try {
            return StringUtils.hasText(key)?stringRedisTemplate.hasKey(key):false;
        } catch (Exception e) {
            logger.error("redisutil error,hasKey({},{})",key,e);
            return false;
        }
    }

}
